CN104377048A - Electric moving contact with elastic mechanism and structure - Google Patents
Electric moving contact with elastic mechanism and structure Download PDFInfo
- Publication number
- CN104377048A CN104377048A CN201410724018.6A CN201410724018A CN104377048A CN 104377048 A CN104377048 A CN 104377048A CN 201410724018 A CN201410724018 A CN 201410724018A CN 104377048 A CN104377048 A CN 104377048A
- Authority
- CN
- China
- Prior art keywords
- contact
- movable part
- elastic mechanism
- strutting piece
- electric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/62—Heating or cooling of contacts
Abstract
The invention provides an electric moving contact with an elastic mechanism and a structure, and belongs to the technical field of electric switches. The electric moving contact comprises moving pieces, a supporting piece, fixing shafts and the elastic mechanism, wherein the moving pieces are connected with the supporting piece through the fixing shafts; the elastic mechanism is connected with the moving pieces on two sides of the movable contact; and the two moving pieces are tightened towards the center of the electric moving contact so as to clamp a static contact with the aid of the elasticity of the elastic mechanism. By a clamping effect of the elastic mechanism, the moving contact is suitable for static contacts with different thicknesses, and can be tightly adhered to the static contact in a planar contact manner, so that heating caused by poor contact is greatly reduced. Moreover, the moving contact can be prevented from being damaged by a machine or electric arc through an arc-shaped guiding portion; and a technology can be simplified and requirements on different capacities can be met by stacking metal plates of the contact. The electric moving contact has the advantages of simple structure, low cost, high applicability, high safety, simple technology and the like. The electric moving contact can be widely used in low-voltage pluggable circuit breakers, disconnecting switches, pincer-shaped clamping mechanisms of electric equipment and measuring equipment and drawer type circuit breakers.
Description
Technical field
The present invention relates to a kind of contact of electrical switch, particularly adopt electro-pneumatic contact and the structure of elastic mechanism.Belong to electric switch technical field.
Background technology
The pincerlike fixtures of plug-pull type breaker, isolating switch, electric equipment and measuring equipment etc., because itself do not possess arc-suppression function, are all strictly on guard against during use that its heating and the more catastrophe failure caused thus are as arcing etc.Current electro-pneumatic contact is all overall structure, different owing to will connect fixed contact thickness, and moving contact and fixed contact contact portion generally adopt arcuate structure, therefore can only keep the contact-making surface only having a line between two kinds of contacts, easily heating and generation electric arc.At present, the application technology in this field still cannot solve the problem that the reason such as mechanical oscillation, contact ablation causes contact position temperature rising, and solve the contact position oxidation caused thus with not yet having technology effective, contact local melting welding, generation the spark even problem of arc discharge, its fail safe, reliability and durability all have much room for improvement.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of the electro-pneumatic contact and the structure that adopt elastic mechanism, traditional linear contact lay being become face contact, increasing the effective contact area between dynamic/static contact, effectively prevent contact from generating heat.To have the rotatable movable part structure of elasticity, make contact face can adapt to different-thickness fixed contact, possess good applicability.Reduce manufacturing cost by simple exquisite structural design simultaneously, and it is different according to capacity, the object of the moving contact realization enhancing through-current capability of movable part and strutting piece is housed by superposition, not only increase the radiating effect of contact, and enormously simplify the complexity of manufacturing process, reduce further cost.
The technical solution adopted for the present invention to solve the technical problems is:
Described moving contact comprises movable part (1), strutting piece (2), fixed axis (3), elastic mechanism (4); Movable part (1) and strutting piece (2) have axis hole (5), and fixed axis (3), through axis hole (5), connects together after being stacked by movable part (1) with strutting piece (2), makes both by top and bottom close contact, forms sufficient electric current conduction area.Movable part (1) is straight flange towards fixed contact (6) side, when inserting fixed contact (6), movable part (1) contacts with fixed contact (6) forming surface, the size of contact-making surface is determined by the length of the straight flange of movable part (1) and thickness thereof, thus solve a Line Contacts between traditional dynamic/static contact, form electric current conduction bottleneck, easily cause the problem that contact generates heat.
In order to automatically adapt to the varied in thickness of fixed contact, adopting elastic mechanism (4) to connect the movable part (1) of moving contact both sides, relying on elasticity to be tightened up to centre by both sides movable part (1), make movable part (1) and fixed contact (6) form close contact.On moving contact, movable part (1) can be different according to the thickness of fixed contact (6), automatically adjust angle, ensure the contact-making surface of a plane all the time with fixed contact (6) under elastic mechanism (4) effect.Certainly, when after the change of movable part (1) anglec of rotation, the electrical connection area between itself and strutting piece (2) can change, and because the change of movable part (1) anglec of rotation is little, its impact is negligible.
Described movable part (1) and elastic mechanism (4) connection bit are equipped with holddown groove hole (7), and there is the stiff end of square at elastic mechanism (4) two ends, and the fixing slotted eye (7) being connected respectively to two symmetrical movable parts (1) forms clamp structure.According to the varied in thickness of fixed contact (6), this clamp structure ensures that two straight flange held tight of symmetrical movable part (1) live fixed contact (6).
When described moving contact inserts fixed contact (6), movable part (1) is in order to adapt to the thickness of fixed contact, can rotate to an angle around fixed axis (3), in order to ensure that strutting piece (2) is unlikely to the rotation of barrier activity part (1), the position that strutting piece (2) closes on fixing slotted eye (7) is narrower than the movable part (1) of correspondence position; In order to avoid strutting piece is undersized, also can arrange rail groove at this position of strutting piece (2), the event trace along the square stiff end at elastic mechanism (4) two ends is arranged, and is the rotation headspace of movable part (1).
Described movable part (1) and strutting piece (2) upper end are arc, when inserting fixed contact (6), can play guide effect, do camber and are convenient to insert.And when inserting fixed contact (6), the straight portion of movable part (1) protrudes from strutting piece (2), and strutting piece (2) does not contact with fixed contact (6).Like this, if band is electrically interposed in, because fixed contact (6) first contacts the arc place of movable part (1) and strutting piece (2) upper end, if generation electric arc, just act on this place, thus can not arc damage be produced to movable part (1) straight portion, namely can not impact the effective working face of moving contact; In like manner, charged when extracting, electric arc is also the arc place only affecting movable part (1) and strutting piece (2) upper end.
The described flexible parts in fixed axis (3) end (8) can be spring or elastomeric pad.Multi-disc movable part (1) and strutting piece (2) are stacked alternately connection by fixed axis (3), it is rotatable due to movable part (1) will be ensured, can not fix too tight, but in order to ensure the top and bottom good contact of movable part (1) and the every a slice of strutting piece (2), too pine can't be fixed, therefore increase elastomeric element (9) in fixed axis (3) end, make to be elastic compression mode between multi-disc movable part (1) and strutting piece (2).
Described movable part (1) comprises the identical sheet metal of one or more pieces structures respectively with strutting piece (2), and during assembling, each composition sheet metal of movable part (1) and strutting piece (2) is stacked alternately.According to the difference of capacity, the sheet metal of varying number can be adopted to stack, thus simplified manufacturing technique.Meanwhile, after movable part (1) and strutting piece (2) are stacked alternately, because the two size is different, the palisade space of middle meeting formation rule, is conducive to contact heat radiation.
Compared with prior art, tool of the present invention has the following advantages:
Moving contact adopts movable part, according to the difference of fixed contact thickness, automatically can adjust angle by the elastic force of elastic mechanism, make it the contact-making surface ensureing a plane with fixed contact all the time, effective increase contact water conservancy diversion area, the heating preventing contact from occurring because of loose contact and phenomenon of arc discharge.
Employing arch section is responsible for guiding, straight portion is responsible for through-flow structure; make no matter when inserting and extracting fixed contact; if having electric arc to produce is all act on arch section; can not impact the normal work of movable part On current, namely contact water conservancy diversion contact-making surface be played a good protection.
Different according to discharge capacity, by increasing movable part and strutting piece superposition quantity change moving contact through-current capability, not only adding the radiating effect of contact, and enormously simplify manufacturing process, and with low cost, easy to assembly.
Accompanying drawing explanation
Fig. 1: moving contact overall structure figure of the present invention.
Fig. 2: moving contact of the present invention inserts the schematic diagram after fixed contact.
Fig. 3: traditional moving contact inserts the schematic diagram after fixed contact.
Fig. 4: the present invention adopts the four stacked moving contact end views added.
In figure: 1-movable part, 2-strutting piece, 3-fixed axis, 4-elastic mechanism, 5-axis hole, 6-fixed contact, 7-fix slotted eye, 8-elastomeric element.
Embodiment
The invention provides a kind of elastomeric electrical moving contact as shown in Figure 1, structure comprises movable part (1), strutting piece (2), fixed axis (3), elastic mechanism (4); Movable part (1) and strutting piece (2) have axis hole (5), fixed axis (3) is through axis hole (5), connected together with strutting piece (2) by movable part (1), elastic mechanism (4) connects the movable part (1) of contact both sides, relies on elasticity to be tightened up to central authorities by two panels movable part (1).
When after insertion fixed contact (6), as shown in Figure 2, on moving contact, movable part (1) can be different according to the thickness of fixed contact (6), automatically angle is adjusted under elastic mechanism (4) effect, its straight portion and fixed contact (6) is made to ensure the contact-making surface of a plane all the time, electrical connection between movable part (1) and strutting piece (2), then realized by adjacent upper and lower surface close contact and elastomeric pad, dash area as overlapping with strutting piece (2) in movable part in Fig. 1 and Fig. 2 (1).When being combined together with fixed contact (6), movable part (1) rotates and the electrical connection area between movable part (1) and strutting piece (2) also may be made to change, but change is little, affects negligible.
Wherein movable part (1) and fixed contact contact portion are smooth flat, during clamping and the contact-making surface of fixed contact (6) fully fit.Movable part (1) is namely the contact portion with fixed contact (6) towards the straight portion of moving contact axis, because it has certain thickness, be exactly the plane of a strip from the side, therefore employing smooth flat effectively can increase effective electrical contact area between the two.
Meanwhile, movable part (1) and elastic mechanism (4) connection bit are equipped with holddown groove hole (7); There is the stiff end of square at elastic mechanism (4) two ends, and the fixing slotted eye (7) being inserted into two symmetrical movable parts (1) respectively forms clamp structure, due to the elasticity of elastic mechanism (4), and the variable thickness of clamping.
After insertion fixed contact (6), movable part (1) adapts to the thickness of fixed contact (6), automatically rotate to an angle around fixed axis (3), in order to ensure that strutting piece (2) is unlikely to the rotation of barrier activity part (1), the position that strutting piece (2) closes on fixing slotted eye (7) is narrower than the movable part (1) of correspondence position, is the rotation headspace of movable part (1).
Strutting piece (2) upper end is arc.When inserting fixed contact, guide effect is played in strutting piece (2) upper end, do camber and be convenient to insert, and when inserting fixed contact (6), the straight portion of movable part (1) protrudes from strutting piece (2), and strutting piece (2) is not contacted with fixed contact (6).Avoiding while electric arc or mechanical reason cause damage to effective contact-making surface, it also avoid fully contacting of strutting piece (2) interfering activity part (1) and fixed contact (6).
Fig. 3 is the schematic diagram after traditional moving contact structure inserts fixed contact, can find out compared with the moving contact structure of the present invention of Fig. 2, on moving contact of the present invention, movable part (1) can be different according to the thickness of fixed contact (6), automatic rotation certain angle, all the time the contact-making surface of a plane is ensured with it, instead of linear contact lay, effectively add flow area.
Fig. 4 is the schematic diagram that multiple movable part (1) and strutting piece (2) stack rear formation moving contact, and moving contact is stacked alternately by multi-disc movable part (1) and strutting piece (2) to form, and fixed axis (3) connects fixing.It is rotatable due to movable part (1) should be ensured, ensure the top and bottom good contact of movable part (1) and the every a slice of strutting piece (2) again, therefore elastomeric element (8) is increased in fixed axis (3) end, what adopt in figure is elastomeric pad, keep forming certain pressure to lamination, can tight good contact; Not exclusively kill again simultaneously, make movable part (1) can rotate under the insertion thrust of fixed contact (6) and automatically adjust angle.
According to the difference of capacity, the contact metal chip architecture of varying number can be adopted, thus simplified manufacturing technique.Meanwhile, after movable part (1) and strutting piece (2) are stacked alternately, because the two size is different, centre defines the palisade space of rule, is conducive to contact integral heat sink.
The foregoing is only better embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. adopt electro-pneumatic contact and the structure of elastic mechanism, it is characterized in that: moving contact comprises movable part (1), strutting piece (2), fixed axis (3), elastic mechanism (4); Movable part (1) and strutting piece (2) have axis hole (5), and fixed axis (3), through axis hole (5), connects together after being stacked by movable part (1) with strutting piece (2), makes both by top and bottom close contact; Movable part (1) is straight flange towards fixed contact (6) side, when inserting fixed contact (6), movable part (1) contacts with fixed contact (6) forming surface, elastic mechanism (4) connects the movable part (1) of moving contact both sides, rely on elasticity to be tightened up to centre by both sides movable part (1), make movable part (1) and fixed contact (6) form close contact.
2. the electro-pneumatic contact of employing elastic mechanism according to claim 1 and structure, it is characterized in that: movable part (1) and elastic mechanism (4) connection bit are equipped with holddown groove hole (7), there is the stiff end of square at elastic mechanism (4) two ends, and the fixing slotted eye (7) being connected respectively to two symmetrical movable parts (1) forms clamp structure.
3. the electro-pneumatic contact of employing elastic mechanism according to claim 1 and structure, is characterized in that: the position that strutting piece (2) closes on fixing slotted eye (7) is narrower than the movable part (1) of correspondence position.
4. the electro-pneumatic contact of employing elastic mechanism according to claim 1 and structure, it is characterized in that: movable part (1) and strutting piece (2) upper end are arc, and after inserting fixed contact (6), the straight portion of movable part (1) protrudes from strutting piece (2), and strutting piece (2) does not contact with fixed contact (6).
5. the electro-pneumatic contact of employing elastic mechanism according to claim 1 and structure, is characterized in that: the flexible parts in fixed axis (3) end (8).
6. the electro-pneumatic contact of employing elastic mechanism according to claim 1 and structure, it is characterized in that: movable part (1) comprises the identical sheet metal of one or more pieces structures respectively with strutting piece (2), during assembling, each composition sheet metal of movable part (1) and strutting piece (2) is stacked alternately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410724018.6A CN104377048B (en) | 2014-12-04 | 2014-12-04 | Electric moving contact with elastic mechanism and structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410724018.6A CN104377048B (en) | 2014-12-04 | 2014-12-04 | Electric moving contact with elastic mechanism and structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104377048A true CN104377048A (en) | 2015-02-25 |
| CN104377048B CN104377048B (en) | 2017-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410724018.6A Expired - Fee Related CN104377048B (en) | 2014-12-04 | 2014-12-04 | Electric moving contact with elastic mechanism and structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104377048B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113096975A (en) * | 2021-04-09 | 2021-07-09 | 上海舒盈科技股份有限公司 | Online temperature measurement heat abstractor of intelligence power contact |
| CN113223892A (en) * | 2021-05-25 | 2021-08-06 | 上海电器科学研究所（集团）有限公司 | Quick vacuum arc control device that does not have spring |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2268843B (en) * | 1992-07-16 | 1996-02-28 | Gec Alsthom Equip Basse Tens | A connecting clamp |
| CN201044338Y (en) * | 2007-06-07 | 2008-04-02 | 白元 | Low-voltage withdrawing distribution box conductive plug-in connecting component |
| CN201219182Y (en) * | 2008-06-17 | 2009-04-08 | 杭州之江开关股份有限公司 | Bridge type contact head connection device of universal breaker |
| CN201369274Y (en) * | 2008-11-03 | 2009-12-23 | 江苏省如高高压电器有限公司 | Contact structure of disconnecting switch |
| CN201576608U (en) * | 2009-12-11 | 2010-09-08 | 中国西电电气股份有限公司 | Conductive switch blade device of high voltage isolation switch |
| CN102118009A (en) * | 2010-01-05 | 2011-07-06 | 北京人民电器厂有限公司 | Electric connection mechanism used for plug-in circuit breaker |
| CN103854883A (en) * | 2012-11-30 | 2014-06-11 | 施耐德电器工业公司 | Switching device |
| CN204189634U (en) * | 2014-12-04 | 2015-03-04 | 哈尔滨理工大学 | A kind of electro-pneumatic contact with elastic mechanism |
-
2014
- 2014-12-04 CN CN201410724018.6A patent/CN104377048B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2268843B (en) * | 1992-07-16 | 1996-02-28 | Gec Alsthom Equip Basse Tens | A connecting clamp |
| CN201044338Y (en) * | 2007-06-07 | 2008-04-02 | 白元 | Low-voltage withdrawing distribution box conductive plug-in connecting component |
| CN201219182Y (en) * | 2008-06-17 | 2009-04-08 | 杭州之江开关股份有限公司 | Bridge type contact head connection device of universal breaker |
| CN201369274Y (en) * | 2008-11-03 | 2009-12-23 | 江苏省如高高压电器有限公司 | Contact structure of disconnecting switch |
| CN201576608U (en) * | 2009-12-11 | 2010-09-08 | 中国西电电气股份有限公司 | Conductive switch blade device of high voltage isolation switch |
| CN102118009A (en) * | 2010-01-05 | 2011-07-06 | 北京人民电器厂有限公司 | Electric connection mechanism used for plug-in circuit breaker |
| CN103854883A (en) * | 2012-11-30 | 2014-06-11 | 施耐德电器工业公司 | Switching device |
| CN204189634U (en) * | 2014-12-04 | 2015-03-04 | 哈尔滨理工大学 | A kind of electro-pneumatic contact with elastic mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113096975A (en) * | 2021-04-09 | 2021-07-09 | 上海舒盈科技股份有限公司 | Online temperature measurement heat abstractor of intelligence power contact |
| CN113223892A (en) * | 2021-05-25 | 2021-08-06 | 上海电器科学研究所（集团）有限公司 | Quick vacuum arc control device that does not have spring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104377048B (en) | 2017-01-18 |
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Granted publication date: 20170118 Termination date: 20201204 |